RANKING · 2024 ACS · 57 SHOWN OF 57

Highest Welsh population share, California counties

California counties ranked by the share of all residents who are Welsh ancestry (2023 American Community Survey). A concentration measure: Welsh residents as a percentage of total population. This list covers the 57 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPWELSH SHAREVS 2000

01Trinity County, CACA15,7202.1%–

02Inyo County, CACA18,1581.9%–

03Lassen County, CACA28,1170.9%–

04Tuolumne County, CACA53,1600.9%–

05Lake County, CACA67,7720.9%–

06Calaveras County, CACA46,6050.9%–

07Mariposa County, CACA16,9180.8%–

08Humboldt County, CACA131,6470.8%–

09Sonoma County, CACA486,4440.8%–

10San Luis Obispo County, CACA282,3670.8%–

11Santa Cruz County, CACA258,8520.8%–

12Placer County, CACA442,0810.7%–

13Shasta County, CACA181,6480.7%–

14Marin County, CACA253,6940.7%–

15Modoc County, CACA8,4260.7%–

16Mendocino County, CACA88,1220.7%–

17Napa County, CACA132,9490.6%–

18El Dorado County, CACA192,3230.6%–

19Butte County, CACA209,2110.6%–

20Sierra County, CACA3,0980.6%–

21Plumas County, CACA18,5830.5%–

22Tehama County, CACA64,6650.5%–

23Glenn County, CACA28,1410.5%–

24Nevada County, CACA101,9110.5%–

25Santa Barbara County, CACA442,0650.5%–

26Contra Costa County, CACA1,170,0700.4%–

27Siskiyou County, CACA42,0130.4%–

28San Diego County, CACA3,282,2480.4%–

29Sacramento County, CACA1,618,4600.4%–

30San Francisco County, CACA826,0790.4%–

31Ventura County, CACA830,8510.4%–

32San Benito County, CACA70,0820.4%–

33Amador County, CACA41,8760.4%–

34Stanislaus County, CACA557,7190.4%–

35Mono County, CACA12,5050.4%–

36Yuba County, CACA88,6910.4%–

37Solano County, CACA455,3760.4%–

38Del Norte County, CACA26,4100.4%–

39Orange County, CACA3,149,5070.4%–

40Monterey County, CACA433,7290.3%–

41San Mateo County, CACA743,5680.3%–

42Riverside County, CACA2,544,9160.3%–

43Kern County, CACA927,0680.3%–

44Alameda County, CACA1,636,6300.3%–

45Yolo County, CACA224,4100.3%–

46Tulare County, CACA485,1460.3%–

47Merced County, CACA297,2600.3%–

48Madera County, CACA167,9270.2%–

49San Joaquin County, CACA823,8150.2%–

50San Bernardino County, CACA2,224,0910.2%–

51Fresno County, CACA1,035,4560.2%–

52Santa Clara County, CACA1,914,3910.2%–

53Los Angeles County, CACA9,694,9340.2%–

54Sutter County, CACA98,7870.2%–

55Kings County, CACA154,3270.1%–

56Imperial County, CACA181,4110.0%–

57Colusa County, CACA21,8360.0%–

SHOWING 1–57 OF 57

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES